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Historical Hydroelectric Power Plant Equipment Engineering.
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Historical Elmer Woodward Oil Pressure Water Wheel Governor information.
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A Woodward VR(vertical relay) type hydraulic governor from patent number 1,106,434, circa 1912.
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(567 x 756)
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Posted on
Friday 9 April 2021
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Historical Hydroelectric Power Plant Equipment Engineering.
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Historical Elmer Woodward Oil Pressure Water Wheel Governor information.
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